The hydrogen-burning supernovas are interesting models.

"Researchers discovered a significant magnesium anomaly in a meteorite’s dust particle, challenging current astrophysical models and suggesting new insights into hydrogen-burning supernovas. (Artist’s concept.)Credit: SciTechDaily.com" (ScitechDaily, Rare Dust Particle From Ancient Extraterrestrial Meteorite Challenges Astrophysical Models)

If the star is too heavy when its fusion reaction starts, it can detonate just at that moment, when its fusion starts. If the collapsing nebula is heavy enough, it can form a black hole straight from the nebula. But if the nebula's gravity is too heavy to form the blue giant or too small it can collapse straight into a black hole. If the forming star is a little bit larger than the blue supergiants. It can explode immediately when the fusion starts.

The theory of hydrogen-burning supernovas consists model of the giant stars that explode immediately after their fusion starts. When the interstellar nebula falls it can form a black hole. Or it can form a star whose fusion runs too hot, and that causes a supernova explosion just after the nuclear reaction begins.

Things like FRBs (Fast Radio Bursts) can transport energy into young stars, and that energy can cause situations, where the energy level in the star turns too high. And that causes the star to explode. Things like kilonovas, or impacting neutron stars, can form fusion in the molecular cloud around it. That shockwave can push atoms together forming things. Like gold and even heavier elements.

Also, if the star goes near a supernova, another supernova can cause a situation in which another star can detonate because of that massive energy blast. The black holes can cause the stars to run too hot when they transmit energy into them. Black holes can pull energy through stars and that accelerates the fusion.

In some models, the young, but very massive star can form at least neutron stars and black holes just after their fusion starts. The white dwarfs require that there is carbon in the star.

It's possible that if the rogue planet starts the interstellar nebula collapse, that planet forms an empty bubble in the star. When the nebula falls and nuclear reactions begin, the planet forms a structure that acts like a vacuum bomb. The shockwave travels inside the planet and reflects causing the expanding fusion front inside the star. And that fusion causes a situation in which the just-born star can explode immediately.

https://scitechdaily.com/rare-dust-particle-from-ancient-extraterrestrial-meteorite-challenges-astrophysical-models/

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Researchers think that the multiverse is not fiction anymore.

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